Fix race between loading/animation when presenting gallery from attachment more view

Tusker/Screens/Gallery/StatusAttachmentsGalleryDataSource.swift

@@ -39,6 +39,21 @@ class StatusAttachmentsGalleryDataSource: GalleryDataSource {
                     // TODO: if automatically play gifs is off, this will start the source view playing too
                     gifController: view.gifController
                 )
+            } else if let entry = ImageCache.attachments.get(attachment.url, loadOriginal: true) {
+                let gifController: GIFController? =
+                    if attachment.url.pathExtension == "gif",
+                       let data = entry.data {
+                        GIFController(gifData: data)
+                    } else {
+                        nil
+                    }
+                return ImageGalleryContentViewController(
+                    url: attachment.url,
+                    caption: attachment.description,
+                    originalData: entry.data,
+                    image: entry.image,
+                    gifController: gifController
+                )
             } else {
                 return LoadingGalleryContentViewController {
                     let (data, image) = await ImageCache.attachments.get(attachment.url, loadOriginal: true)